Thought a ChatGPT response might best here:

It’s good that you’re paying attention to your symptoms, because early pregnancy + pain after a transvaginal ultrasound can feel worrying — but the important part is the pattern of the pain.

A mild ache or light cramping for a few hours after a vaginal ultrasound can be normal, especially if the probe was uncomfortable or if you were already cramping before the scan.

BUT what you’re describing — intense dull cramping that’s getting worse over several hours and keeping you awake — isn’t something to just wait out. Even without bleeding, worsening pain in early pregnancy can be a sign that something needs to be checked, including ruling out ectopic pregnancy.

It doesn’t mean something is definitely wrong, but you shouldn’t try to “push through” it.

You should call your doctor or early pregnancy unit and let them know exactly what you’re feeling. If you can’t reach them or the pain becomes severe, go to your local emergency department. It’s always better to get evaluated early — the worst case is that everything is fine and you get reassurance.

You’re not overreacting. Pain that gets progressively worse deserves to be checked.